N Datasheet, N PDF, N Data sheet, N manual, N pdf, N, datenblatt, Electronics N, alldatasheet, free, datasheet. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise . 3. Ordering information. 74HC; 74HCT 4-to line decoder/ demultiplexer. Rev. 7 — 29 February Product data sheet. Table 1. Ordering .

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All the other ouputs stay high. Any pointers would be helpful. Sign up using Facebook.

A demultiplexer is a great way to allow you to use more output pins for your Arduino. Sean Lovelady May 12, at 1: I am making a Jupiter II model, and want to build the fusion core for the bottom of it.

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Use 4 Arduino pins for 16 outputs! Serial to Parallel Demultiplexer

Email Required, but never shown. Hi, I am new to the Arduino, I have a project I am working on to test wiring harness. According to the internal logic diagram on the datasheet, the G inputs are connected to a two-input AND gate with inverting inputs, whose output feeds one input datawheet all the NAND gates that produce the outputs.

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I was wondering if you can control multiple 74hc with the 74lsn. June 18th, 1 Datwsheet. This leads to possible outputs ranging from to on the 4 pins.

Diego July 26, at 5: WhatRoughBeast 49k 2 28 Sign up or log in Sign up using Google.

Sign up using Email and Password. Notify me of new posts by email. The active-low output is just how the design for that specific decoder was carried out – there is also active-high varieties.

And why are there 2 of them, you ask? Post as a guest Name. That is, for an input ofthe 0 output is selected, 7415n it is driven low.

Notify me of follow-up comments by email. Paul Johnosn August 1, at 5: June 23rd, 0 Comments. June 30th, 0 Comments. June 19th, 0 Comments. Rather than providing only a single enable, both pins are used.

I would like to appprentice even as you amend your website, how can i subscribe for a blog site? EEEnthusiast August 13, at 9: So is it possible that both enables are hooked to a 2-input OR gate; this is just making dataseet of the extra pins to make 24?

Will someone please explain the purpose of inverting the outputs 0 through 15 as well as the use the NAND gates here? As for the NAND gates, there is a function being implemented 74154b which the gates are there to realize it.

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Learn how your comment data is processed. Make sure to fully understand what goes where and how everything is tied together internally. Use 4 Arduino pins for 16 outputs! If you have any questions about a specific segment, leave datashheet in a comment below or on the forums. Hi Sean, No, that would not work. If you have any questions about the implementation, feel free to post them below or on the forums.

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4 to 16 decoder logic diagram – Electrical Engineering Stack Exchange

No, that would not work. That is, if the outputs were active high, OR gates would perform the synthesis desired. Keep in mind that my video showcases the hardware implementation of the IC before jumping into the Arduino Serial to Parallel implementation. If you are looking for a different way to drive your outputs, or want an easier solution to your output needs, this tutorial is definitely for you.

First, the inversion of the outputs simply means that the output is active low. What you need to pay attention to as well is the truth table. Its purpose is to take a Serial signal and convert it to a parallel one. There are probably two enable inputs because otherwise there would be two unused pins on the 24 pin package I don’t recall seeing 22 pin DIP packages.

My first question is more important Home Questions Tags Users Unanswered.